.menu {
  width: 240px;
  height: 100%;
}

.menuBox {
  background-color: aqua;
  width: 240px;
  height: 100vh;
  overflow-y: auto;
  bottom: 1px solid black;
}

.root {
  width: 100vw;
  height: 100vh;
  display: flex;
  /* 主轴默认方向：从左往右 */
  flex-direction: row;
}

.rightSide {
  flex: 1;
  background-color: rgb(221, 203, 223);
}

.head {
  display: flex;
  align-items: center;
  flex-direction: row-reverse;
  background-color: aqua;
  height: 70px;
}

.avatar {
  margin-right: 10px;
}